Diesel Fuel Additives Latest Technology

The AMSOIL diesel fuel additive line boasts several improvements, with AMSOIL Diesel Injector Clean (ADF) and AMSOIL Diesel Injector Clean + Cold Flow (DFC) featuring new formulations designed to clean both the tough to-remove deposits surfacing in modern high-pressure common-rail (HPCR) diesel engines and traditional injector deposits. The formulations of AMSOIL Diesel Cetane Boost (ACB) and AMSOIL Diesel Cold Flow (ACF) remain unchanged.

Targeted Performance Delivers Maximum Results

Unlike all-in-one diesel fuel additives that may sacrifice performance in specific areas in the name of convenience, AMSOIL diesel fuel additives make no sacrifices; as performance concentrates, they deliver maximum results in specific areas, representing an alternative to less effective all-in-one additives. AMSOIL diesel fuel additives are recommended for all types of on-and off-road, light-and heavy-duty and marine diesel engines.

Advanced New Formulation

A new type of injector deposit is surfacing in modern diesel engines that some additives aren’t formulated to address. To supply fuel to today’s more powerful diesels while meeting tightening emissions standards, some manufacturers are using high-pressure common-rail (HPCR) engine designs. Injection pressures near 30,000 psi atomize the fuel into a fine mist for more efficient combustion, yielding increased power and fuel economy while reducing emissions. To maintain these high pressures, injector assemblies are highly engineered with clearances as tight as 1-3 microns (a human hair is typically 70-100 microns thick). With clearances so tight, deposits are forming inside HPCR injectors, and even minimal deposits can cause poor injector-needle actuation. In extreme cases, deposits can lead to complete sticking or seizing of the injector needles, particularly after the vehicle has been shut down and the engine allowed to cool. Traditional additive chemistry is not designed to address these tough-to-remove deposits.

Even Minimal Deposits Reduce Performance

As these internal deposits build up, they can cause the same symptoms as traditional external carbonaceous deposits, including lost power and reduced fuel economy. These new deposits are called internal diesel injector deposits; they do not form on the external tips of the injectors, but on the internal parts, such as the injector needles and pilot valves. Even a small deposit layer can cause major sticking in advanced injector systems with greatly reduced mass and inertia of moving injector parts. Also, unlike in older engines, modern injectors are expected to accomplish as many as six pulses within a single injection cycle; disruptions due to injector sticking can have serious consequences, including lost power and fuel economy.

AMSOIL diesel fuel additives are performance concentrates, delivering maximum results in targeted areas of performance that all-in-one additives can’t match.

AMSOIL Diesel Injector Clean and Diesel Injector Clean + Cold Flow offer advanced chemistry that guards against internal diesel injector deposits. Along with AMSOIL Diesel Cetane Boost and AMSOIL Diesel Cold Flow, they set the standard for diesel fuel additive performance, delivering concentrated performance all-in-one additives can’t match

Diesel Injector Clean

Diesel Injector Clean

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– Formulated for all diesel fuel systems, including high pressure common rail (HPCR) designs
– Clean dirty injectors
– Adds lubricity to reduce fuel-pump and injector wear
– Improves fuel economy up to 4.5%
– Improves power and torque
– Reduces smoke and emissions
– Improves startability
– Combat fuel systems corrosion
– Reduces downtime and maintenance costs
– Alcohol free



Diesel Cold Flow

Diesel Cold Flow


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– Improves diesel cold-flow ability by up to 20%F
– Enhances engine reliability in cold temperature
– Improves startability
– Designed for diesel fuel systems
– Reduces downtime and maintenance costs
– Alcohol free

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Diesel Injector Clean & Cold Flow

Diesel Injector Clean & Cold Flow

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– Combines the benefits of AMSOIL Diesel Injector Clean and Diesel Cold Flow in one convenient bottle

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Diesel Cetane Boost

Diesel Cetane Boost

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– Raises cetane of diesel fuel up to seven points
– Delivers maximum horsepower
– Increases fuel economy
– Improves startability
– Smooths idle
– Reduces smoke and emissions
– Designed for all diesel fuel systems
– Alcohol free